More on the the premature engine cut off during the attempt to boost ISS’s orbit earlier this week.
More information on the the premature engine cut off during the attempt to boost ISS’s orbit earlier this week.
Tag: engineering
The Russians have pinpointed the cause
The Russians have pinpointed the cause for the August 6 Proton rocket launch failure to a problem during production of the upper stage.
In related news, the head of the space firm that made the rocket has resigned.
A routine engine firing to raise the orbit of the International Space Station failed to come off today.
A routine engine firing to raise the orbit of the International Space Station failed to come off today.
Though it appears the engines on the European ATV cargo craft did not fire as scheduled, the report is very vague and does not make clear what actually happened. Stay tuned.
A test flight of an Air Force hypersonic aircraft failed yesterday when it went out of control before its experimental scramjet engine could be started
A test flight of an Air Force hypersonic aircraft failed yesterday when it went out of control before its experimental scramjet engine could be started.
Though failures during engineering tests are not really failures, as the goal is to find out if the engineering works or doesn’t, this particular failure is a bit more like a real failure. They never got to test the scramjet engine, which was the point of the entire flight. Instead, they had a failure of a control fin on the aircraft, and it appears that this fin was “faulty.” Not a good sign, especially as the previous flight in June 2011 also failed prematurely.
The test of Coperhagen Suborbital’s capsule launch abort system failed spectacularly on Sunday.
The test of Coperhagen Suborbital’s capsule launch abort system failed spectacularly on Sunday. With pictures.
“We had perfect launch, but quickly the entire configuration began to tumble,” said Kristian von Bengtson, co-founder of Copenhagen Suborbitals. “The main chutes clearly did not have complete deployment and the capsule hit water in high speed, buckling the bottom shield.”
An update on Dawn’s reaction wheel failure.
An update on Dawn’s reaction wheel failure.
Essentially, this will delay the journey to Ceres for about nine days. The spacecraft is left with two working reaction wheels, with which it can complete all its science work. However, if they cannot get the failed wheel working again, Dawn will be left with no backup should another wheel fail.
First video from Curiosity – Life on Mars?
An evening pause: Breaking news! The first video beamed back from Curiosity!
One of Dawn’s reaction wheels, used to orient the spacecraft, shut down last week.
Uh-oh: One of Dawn’s reaction wheels, used to orient the spacecraft, shut down last week.
During a planned communications pass on Aug. 9, the team learned that the reaction wheel had been powered off. Telemetry data from the spacecraft suggest the wheel developed excessive friction, similar to the experience with another Dawn reaction wheel in June 2010. The Dawn team demonstrated during the cruise to Vesta in 2011 that, if necessary, they could complete the cruise to Ceres without the use of reaction wheels.
That the spacecraft can get to Ceres without reaction wheels is good. However, can it be oriented precisely to do science without these wheels? The JPL press release does not say.
Headphones for cats.
News you can use: Headphones for cats. With video!
With its most recent glide test on Saturday it appears SpaceShipTwo has successfully fulfilled its glide engineering goals.
The competition heats up: With its most recent glide test on Saturday it appears SpaceShipTwo has successfully fulfilled its glide engineering goals. Hat tip Clark Lindsay at NewSpace Watch. To quote their flight summary:
With this latest round of six flights we have cleared the full glide-flight envelope for airspeed, angle-of-attack, CG, and structural loads!
Watch the first test flight live this weekend of Copenhagen Suborbitals manned capsule.
Watch the first test flight live this weekend of Copenhagen Suborbitals’ manned capsule launch abort system.
If all goes as planned, the Launch Escape System will rocket [the capsule dubbed Beautiful] Betty and Randy [the crash dummy] from a seafaring launch platform, loft them to a height between 2,620 and 3,280 feet and then splash down in the Baltic Sea. At that point self-inflating bags will emerge from Betty and right the floating spacecraft.
The CIA has now declassified the story behind their effort in 1971 and 1972 to recover a satellite film canister from 16,400 feet below sea level in the Pacific.
The CIA has now declassified the story behind their effort in 1971 and 1972 to recover a satellite film canister from 16,400 feet below sea level in the Pacific.